Tracking · head-to-head
Correios vs WeCanTrack
Correios exposes a REST API suite covering package tracking (Rastro), address lookup (Busca CEP), shipping cost (Preço), and delivery-time estimates (Prazo) for Brazil's national postal service. Access is gated behind a commercial shipping contract rather than public self-serve signup, with keys issued and validated through the CWS (Correios Web Services) portal under a Meu Correios login. A 2026 security tightening now restricts tracking queries to parcels tied to the querying contract, closing off third-party lookups of packages a caller didn't send.
WeCanTrack is an affiliate-marketing attribution service whose Public Clickout API rewrites an outbound affiliate link with a tracking sub-ID before redirecting the shopper, letting merchants tie clicks back to conversions across 450+ affiliate networks. Every call carries a per-account API key (via header or query string), and the public clickout endpoint is IP-throttled to 30 requests/minute to keep redirect latency low. There's no ongoing free tier — plans start at $69/month after a 15-day trial.
| Correios | WeCanTrack | |
|---|---|---|
| Authentication | API Key | API Key |
| Pricing | paid | paid |
| Formats | JSON | JSON |
| CORS | no | yes |
| HTTPS | Yes | Yes |
WeCanTrack supports CORS, while Correios doesn't — pick WeCanTrack for direct browser calls.